OpenAI: GPT-5.1 Chat
OpenAI Mid-tier
Model ID: gpt-5.1-chat
Pricing
Input $1.25 / 1M tokens
Output $10.00 / 1M tokens
Cache Read $0.13 / 1M tokens
Specifications
Context Window 128K tokens
Max Output 16K tokens
Family gpt-5.1
Mode chat
Capabilities
StreamingSystem PromptsVisionFunction CallingJSON Mode